Deep-well-drilling apparatus and the like



DEE

W L DRILLLNG APPARATUS AND THE hIKE /NVENTOR 25 and bearing memb'er.

Patented Nov. 9, 1926.

. UNITED STATES PATENT OFFICE.

FRED x. BLA'UYVAELT, or WICHITA, KANSAS, ASSIGNOR To 0. E. REED,

OF WICHITA,

KANSAS.

DEEP-WELL-DRILLING APPARATUS AND .THE LIKE.

Application filed November 5, 1925.

. This invention relates to deep well drilling tools' and more particularly to tools n lowing specification ofan embodiment of the invention illustrated in theaccor'npan'ying drawings in which ,is shown a'seotional f view through the centerline of a bearing andv 3, with its bearing member 2 and with the 65 cutter held in a body member.- V In the preferred embodiment, the invention consists of a body member (1) having a' recess, the walls of which havea seat recess' (8) to receive formed ends of a'bearing member .(2) carrying a rolling cutter (3). The member (2) has a bore ,to receive a spring (4:) which actuates a plug' (5) and holds the plug as a lock between the body the body (I) carry the loads where the ends ,of bearing member (2) are' fittefd. The recess in body (1) receiving the end of plug (5) is of smaller diameter than the main portion of plug (5), which is, therefore,

'revented' from falling out. A. hole (6) thru the outside of the body permits the insertion of -1a punchto compress the-spring when cutter (3) and bearing (2) are to be removed. As all parts operate in mud slush the plug (5) -is perforated (7) to permit drainage of. any thin mud thataccumulates about the -plug (5), spring (4:) or in the recesses in bearing In assembling, the, body (1). will be formed to receive the member (2). the con- I tacting surfaces being arranged to take all operating thrusts and loads. The invention automatically locks the parts in posi tion when placed together.- All parts are internally contained, and protected from .abrasive actio in operation in the well.'

The perforation of plug (5) reduces the area of its end exposed to fluid or other for instance, any member Shoulders formed 1n.-

' it, said claim Serial No. 67,007.

pressures through the hole in body (1) and thus prevents accidental unlocking an separation of the members in the well.

It will, of course, be understood that while the preferred embodiment'illustrates the in vention, applied to a rotary roller drill, the invention is not intended to be limited thereto, other applications of the invention may be readily made in well tools, where it is desired to lock in position some member normally working within another, as

fitting into a recess and supported by the sides orwalls thereof.

Itwill be observed that the rotary cutter locking means '5 are all assembled previous to their insertion into the recess or pocket in the'bit head .1 and they are introduced into said pocket or recess as one body. The locking means is self acting. Thus when the previously assembled parts are inserted into the pocket to such a point where the spring plug '5 aligns with the recess in the inner side of the pocket, designed to receive plug will automatically spring into place and hold the assembled roller cutter organization against falling out. The duty that this locking plug performs is to prevent the said organization from falling out of place. It does not have ,to sustain upward thrust as this is, borne by the shoulders on the walls of the pocket against which parts of the journal or hearing I contact.

Equalization of pressure of the fluid in the well will take place as between the inner face of the locking plug and the clearance space around the bit head because the fluid at the bottom of the well is free to enter through the bore in the plug into the recess in which the plug is located and this added to the force of the. spring'will maintain the locking plug in position tohold the parts together. 7

Having thus described my invention. I

.1. In combination in a deep well drilling apparatus, a bit head having a. pocket to receive a roller cutter organization, said organization comprising a roller cutter, and a bearing. assembled therewith to be inserted into or removed from said pocket as one body, and locking means carried by the bearing to be inserted With said bearing into the pocket as one body, said locking means engaging a part of the wall of the pocket to hold the organization therein;

2. In combination in a deep well drilling apparatus, a bit head having a pocket to receive a roller cutter organization, said organization comprising a roller cutter and a bearing assembled therew th to be inserted into or removed from said pocketas one body, and locking means carried by the bearing to be inserted with said bearing into the pocket as one body, said -locking means engaging apart of the wall of the pocket to hold the organization therein-said pocket having a'shoulder on its wall to be engaged by the bearing to sustain the thrust, substantially as described.

, 3. In combination in a deep well drilling apparatus, a bit head having a pocket, a roller cutter, and a bearing therefor, as-

, sembled to 'be handled as one body for insertion into or removal from said pocket,

and meanscarrie d by the bearing for automatically interlocking with the wall of the pocket, substantially as described.

4. In combination in a deep well drilling -apparatus,a-bit head having a pocket, a

roller cutter and bearing, a locking plug, and a springfor' pressing said plug outwardly, said plug and spring being assembled with the bearing to be inserted into the pocket therewith as one body, said pocket having a portion to be engaged by the plug for holding the bearing in place, substantially as described.

5. In combination in a deep well drilling apparatus, a bit head having a pocket, a

'rollercutter' together with a. bearing member, and an automatic locking meansas v sembled to be handled as one body for insertion into or removal from the pocket, saidpocket having a portion to be engaged by said locking means for holding the bearing with its rotary cutter in place,

pocketand having automatic resilient lock-I I ing means, said pocket having a recess in its wall to receive said locking meansjand an opening through the wall to 'saidrecess by which access maybe had from the outside for the release of the said locking means, substantially as described. 2

7 In combination in rotary rollercutter drilling tools, a bit head having a pocket, a

roller cutter,a bearing therefor, having a recess in one end, a locking plug in the recess, and a spring for pressing said plug outwardly, said parts being assembled to be handled as one body for insertion into or removal from the pockets,said plug being I perforated to" communicate with the recess for drainage, said bit head having a recess to receive the plug, and an opening leading from said recess to the outside for drainage and for allowing access to be hadto the plug for its release, substantially as described.

8. In a deep Well drilling apparatus and in combination, a bit head having-a pocket, a roller cutter organization, insertible into or removable from said pocket as one body, and locking means carried by the roller cutter organization as one body, Wholly located between the walls of the pocket and automatically engaging a portion of one of said. walls to hold the said organization in place, said locking means being removable only through the open mouth of said pocket, together with said roller cutter. organization, said pocket having an opening-in its wall for the manipulation of the lock, substantially as described.

9. In combination, a pocket or recess, a roller cutter organization having a bearing member, and 'a roller cutba head having a ter mounted thereon, which bearing,mem-

ber has a recess in its end, a locking plug and spring in said recess, the wall of said pocket having a portion to be engaged by the plug for holding the roller organization in place, and having also an opening leading to the outside of less diameter than the plug to expose a portion of said plug for its manipulation, substantially as described. v

10. In combination in a deep well drilling apparatus, a bit head having a pocket,

a roller cutter organization comprising a bearing, and a roller cutter mounted thereon, loeliingv means carried by the bearing, and engaging the interior wall ofthe pocket, said bearing with the roller cutter and locking meansfbeing assembled to be han dled as one body, and a passage through the wall of the pocket and past the locking 4 means forthe equalization of pressure of the fluid in the well on opposite sides of said locking means, substantiallyas de- 11. In combination'in adeep well drill ling apparatus, a-bit head having a pocket,

scribed.

a roller cutter organization, having a locking device'mounted thereonto-be inserted into or removed-from said pocket as one body with the -organization, saidlocking device holding the said cutter organization within the pocket by."automaticall y engaging the inner side of the wall of the pocket, said pocket having an opening through its wall \s 'hereby access is bad to the locking organization as one body, and automatidevice for its release, substantially as decally engaging the inner side of the Wall scribed. of the pocket, substantially as described. 10

12. In combination in a deep well drill- In testimony whereof, I affix my signaing apparatus, a bit head having a pocket, ture.

a roller cutter organization invsaid. pocket, and locking means carried by the roller FRED K; BLAUVELT. 

